Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

Can you start the fire using two pieces of wood?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

A thief is convicted in Mexico. He gets the death penalty. The judge allows him to say the last sentence to determine how the penalty will be carried out. If the thief lies, he will be hanged, if he speaks the truth he will be beheaded. The thief tells the last sentence and to everybody's surprise some minutes later he is set free because the judge cannot determine his penalty. What did the thief say?

What does below Rebus mean ?

esgg sgeg gegs gsge

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

In the picture given below, can you find out which digit will take place of the question mark?

What is next number in the pattern below:

131 517 192 123 ?